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pacificon_assy_041621.pdf

Wiring note: The speaker jack is shown facing up for connection clarity. Install

the jack with the pins down.

Use the two 4” cable ties to bundle the wires close to the pcb. This reduces the
strain on any individual wire.

[ ] Plug J4 and J5 pigtails into the correct board receptacles, and slide the top

Pcb assembly into the chassis, securing it with the four 3mm x 10mm long
bottom screws.

This completes the assembly

Trouble shooting:

The #1 reason a kit does not work, is soldering issues.

Содержание Pacificon KD1JV

Страница 1: ...ions need to match each other s frequency exactly Or at least really close As the center frequency of one or the other or both stations start to drift apart the beat note of each side band starts to s...

Страница 2: ...watts CW Transmit Mode Up to 5 watts Rx current 40 ma Tx Current CW 650 ma 13 8 V 4 5 watts out TX spurs well below 50 dBc 12 to 14V supply Assembly The first step is to sort the parts into groups of...

Страница 3: ...2 1M Brn Blk Grn Gld 1 25K 9mm pot 1 Si5351A 1 2K 6mm trimmer 1 1N5817 5 1N4148 3 10 uH molded inductor 1 2N3906 PNP TO 92 2 2N3904 NPN TO 92 1 16 000 MHz HC 49S 8 BS170 MOSFET TO 92 1 25 000 MHz HC 4...

Страница 4: ...10 ohms R35 Brown Black Black Gold 51 ohms R12 Green Brown Black Gold 150 ohms R13 Brown Green Brown Gold 2 2K R4 R6 R9 R10 R23 R27 R28 R29 R30 R31 R32 R33 R34 Red Red Red Gold 4 7K R7 R15 Yellow Vio...

Страница 5: ...ime to install the display before the higher profile parts start to get in the way of the soldering iron LED Display flip the board over and install the display flush with the surface It will go in on...

Страница 6: ...dentify the common ends of the wires and arrange them so that they are opposite each other as shown The wires will now be in the proper positions for inserting into the board L4 T37 2 RED core 18 turn...

Страница 7: ...ons for adding an optional ON OFF switch and external speaker headphone jack Until these options are installed jumpers must be installed so the board gets power and the speaker mic speaker is connecte...

Страница 8: ...rectly Apply power to the board Check for 9V Pins 8 and 4 of the U3 socket is a good place to check Check for 5V Pins 7 and 8 of U5 is a good place to check Good to Go Insert the MEGA328P processor in...

Страница 9: ...due to the power being split between the two side bands Average power will be much less Calibration Now that everything is working do the frequency calibration Until this is done the actual frequency...

Страница 10: ...8 8 8 8 8 The band for which the board operates on is displayed bnXX The default operating frequency is displayed and the rig is ready to operate The default tuning rate is 1 kHz Display The display...

Страница 11: ...00 RIT tuning rate is changed to 10 Hz The original tuning rate which was selected before RIT was enabled will be restored on exiting RIT Range is 9 990 kHz To exit push the Encoder again for 500 mill...

Страница 12: ...e filters to a different band Unless you really want to do this best not to push the Encoder too long Release the Encoder when the display reads e rAS Once the Encoder is release the display will read...

Страница 13: ...Not good Therefore a separate 3 5mm 3 ring 4 pole key jack should be added for CW You might also want to add a jack for a speaker or headphones There are provisions J4 J5 on the board for plugging in...

Страница 14: ...an AM broadcast band rich environment a high pass filter can be easily built Construct it in an Altoids box with a couple of BNC s and place it between your antenna input to the Pacificon and your ant...

Страница 15: ...frequency This will become apparent if a SWBC station happens to be at the 3nd harmonic of the LO Front panel drill drawings These will print to actual scale but make sure your print options are set...

Страница 16: ...ns can be found in the chassis assembly manual If you exercise this option remember to remove the speaker jumper installed earlier Shown below are the details for J4 J5 and the optional SKC keyer If y...

Страница 17: ...4 cable ties to bundle the wires close to the pcb This reduces the strain on any individual wire Plug J4 and J5 pigtails into the correct board receptacles and slide the top Pcb assembly into the cha...

Страница 18: ...em is not properly tinning the magnet wire on the toroid windings Or pulling the wire through the pad past the area which was tinned If a visual inspection doesn t spot the problem the problem area ne...

Страница 19: ...Page 19 of 19 pacificon_assy_041621 pdf...